Dental mounting.



C. C. MANNING.

DENTAL MOUNTiNG. APPLICATION Flix-:D ocr. 2o,i916.

atented Jan. 16, 1917.

\ rll/ f i W/ T/VESSES ggd/al@ CHARLES C. MANNING, OF MINNEAPOLIS, MINNESOTA.

DENTAL MOUNTING.

Specification of Letters Patent.

Patented Jan. 16, 1917.

Application filed October 20, 1916. Serial No. 126,711.

To all 'whom it may concern Be it known that I, CHARLES C. MAN- NING, a citizen of the United States, resid ing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Dental Mountings; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in dental mountings; and, to this end, it consists of the novel devices and combinations of devices hereinafter described and defined in the claim.

The invention is especially adapted for use in anchoring the backings of artificial teeth facings in bridgework, but may als@ be used in securing Richmond crowns, in lays and the like in position.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a front view of a bridge and anchor teeth to which said bridge is secured; Fig. 2 is a view, partly7 in edge elevation and partly in horizontal section taken on the line 2-2 of Fig. l; Fig. 3 is a view, principally in horizontal section taken on vthe line 3-3 of Fig. 1, on an enlarged scale, with some parts diagrammatically illustrated by means of broken lines; Fig. t is a view corresponding to Fig. 3, with the exception that the anchor pins are cut off, instead of clenched; Fig. 5 is a view in vertical section taken on the line 5 5 of Fig. 1; Fig. 6 is a perspective view of the dental backing shown in Figs. l to 5, inclusive; Fig. 7 is a horizontal section taken centrally through the dental backing shown in Fig. 6, on an enlarged scale; Fig. 8 is a fragmentary view, partly in side elevation and partly in section and illustrating a tool in position for upsetting the tubular stem of the backing in securing the tooth facing to the bridge, said backing, tooth facing and bridge being inverted, with respect to Fig. 1; and Fig. 9 is a view corresponding to Fig. 7, but showing a modified form of the dental backing.

As one use of the invention, the same is illustrated in the drawings as incorporated in bridgework of which the numerals 1, 2 and 3 indicate, respectively, the bridge proper, teeth facings, and backings for securing the teeth facings to the bridge. The bridge l, shown, has two teeth facings 2 and is anchored to two natural teeth l by inlays or any other well known method, not shown. Each backing 3 is in the form of a relatively thin sheet of metal, having at its longitudinal and transverse center a tubular stem 5, which projects laterally therefrom. In Figs. 1 to 8, inclusive, the tubular stem 5 is shown rigidly secured to the backing 3 by solder G, and in Fig. 9, said stem is integral with the backing 3.

As is well known, artificial teeth facings, the same as shown in the drawings and identified by the numeral 2, are sold on the market in various different sizes and shades and each thereof is provided with a pair of horizontally spaced pins 7, which project from the back thereof. These teeth facings 2 are usually secured to a-bridge by drilling holes therein to receive the pins 7 and then cementing said facings and pins to the bridge. This means of securing teeth facings in bridgework is not entirelv satisfactory, for the reason that said facings come off, especially where there is considerable stress on the teeth.

In securing an artificial tooth facing to a bridge with my improved dental mounting, holes are drilled in the backing 3, one on each side of its stem 5, to receive the pins 7 and the marginal edge of said backing cut to conform to the shape of the tooth facing to which it is applied. The tooth facing 2 is then cemented to the backing 3 and the pins 7, either clenched, as shown in Fig. 3, or cut off' flush with the exposed face of the backing and soldered thereto, as shown in Fig. il.

The backing 3 is secured to the bridge 1 by drilling a hole S therein to snugly receive the tubular stem 5 and countersinking the inner end of said hole to form a tapered seat 9. rThe outer end of the tubular stem 5 is then upset in the seat 9, as shown in Figs. and 3, to firmly and positively secure the backing 3 to the bridge 1. Cement, not shown, is placed between the bridge and backing to assist in connecting the same and for sanitary reasons. After the stem 5 is upset, the projecting end portion thereof is ground flush with the inner face of the bridge 1 and the cavity formed by said stem is filled with silver 10, or other suitable material. When the ends of the pins 7 are clenched, as shown in Fig. 3, the bridge 1 has formed therein cavities 11 to receive the clenched portions of the pins. Obviously, the filling 10not only fills up the cavity in the stem 5, but greatly strengthens the sameby holding its upset portion in the seat 9. Y

As one means for upsetting, the tubular stem 5, there is illustrated in the drawings a special tool in the form of a pair of pliers 12, having on one of its jaws a swage block 13 and on its other jaw a soft faced platen, comprising a cup-like 'receptacle 14, secured to the respective jaw, and dental Wax'l placed in said receptacle. In upsetting the tubular stein 5, the dental Wax 1,5 of the platen bears directly against the outer face of the artiiicial tooth facing 2 and the sivage block 13 enters the said stem and ex` pands the same into the seat 9. Under pressure applied by the pliers 12, the dental Wax 15 shapes itself to the contour of the tooth facing 2 and prevents cracking or marring of the tooth facing. The expanding of the stem 5 in the seat- 9 securely and positively holds the backing 3 to the bridge 1, and the filling 10 placed in said stem prevents the expanded portion of the stem from crumpling up, under undue stress.

Each time a tooth facing is applied to a bridge, the Wax 15 may be removed from the receptacle 14: and heated by placing the same in Water or otherwise, and then worked into a mass and replaced in the receptacle, in order that the same may shape itself tothe contour of the next tooth facing applied to the bridge. By the use of the improved backing, artificial teeth facings may be very quickly and firmly secured to a bridge, While the same is in a patients mouth.

.In using the improved dental mounting in securing a RichmondY crown to a tooth prepared to receive the same, one of the tubular stems 5 is rigidly secured thereto by solder or otherwise. canals of the tooth to Which the crown is to be applied Will also have to be prepared to receive the tubular stem 5, Which is to be inserted therein, and formed with a tapered seat with which the stemy may be upset. With the tubular stem 5 inserted into the nerve canal prepared tok receive Lne same, said stemris upset by internal pressure, produced by any suitable tool- The c'rovvn will, oIp course, have to have a Vhole drilled therethrough and into the stem 5 One Vof the nerve Y for the reception of the tool inV expanding p the stem. After the crown in secured in position, the hole drilled therein must, of course, be filled. f

In securing an inlay in position by the improved dental mounting, one of the tubula'r stems 5 is soldered or otherwise rigidly secured to the inlay and aV hole drilled through the tooth and into the cavity prepared to receive the inlay. The tubular stem 5 is then inserted into the hole, at the time the inlay in positioned in the cavity, and upset in the same manner as applying a backing to4 a bridge.

lhat I claim ist; n

A dent-al backing having a tubular stem, a tooth facing, means for securing the tooth facing to said backing, and a bridge having a bore into which the tubular stem of said backing is inserted and upset to secure the backing to the bridge.

In testimony whereof I aflix my signature in presence of two Witnesses.

CHARLES C. MANNING. `Witnessesz j E. C. l/VnLns, HARRY D. -KiLGORnv Copies of this patent may be obtained for .ve cents each, by addressing the Commissioner of Patents,

' Washington, D. C. Y 

